General summary/comments (optional)

There is a bug where a local dependency that has been built from a local consumer project would be installed in the package db for the consumer project but not in the local dependency's own package db. This results in an error where ghc-pkg is unable to find the cached local package in its own package db and the build fails. This can be resolved by running stack clean and then stack build for the local dependency, but then a build for the consumer of the package will fail as it tries to find the local dependency in its own package db. The only fix is then to again run stack clean for the local dependency and then run stack build for the consumer of the dependency.

I have provided a PR with a simple fix (#5613). This fix is extremely simple: remove one line that modifies the setup-config file and causes the trouble. A more satisfying fix for this issue may be to figure out how to adjust the package db search so that cached builds can be used both by the local package and any consumers of the local package.

Steps to reproduce

See description above.

Expected

See description above.

Actual

See description above.

Stack version

2.7.3

Method of installation

• Official binary, downloaded from stackage.org or fpcomplete's package repository